CIRCLE SEAL CONTROLS

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1 CIRCLE SEAL CONTROLS ATKOMATIC SOLENOID VALVES INSTALLATION, MAINTENANCE, AND OPERATION INSTRUCTIONS 3000 SERIES Bronze, Normally Closed, Direct Lift Installation Instructions WARNING: These instructions should be read, understood, and followed before installation. Failure to do this can extremely dangerous and cause valve malfunction. 1. An adequate filter system must be installed in the line ahead of each valve to prevent foreign matter from damaging the seal faces and/or obstructing the valve orifices causing operational failure and leakage. A maximum rating of such a filter is 40 microns to provide adequate protection. 2. Pipe thread sealing compounds and tape must be prevented from entering the valve. 3. New systems must be adequately flushed to remove all pipe scale, weld slag, thread burrs, etc. It is typically necessary to flush new systems several times, removing contamination lodged in filters and other components, until no debris is present. 4. Valves must be installed in a horizontal line with the coil oriented up (within +/- 10 degrees). 5. Mount the valve in the line such that the side port is the inlet (or the port marked IN on in-line valves)\ is the inlet and the bottom port is the outlet. 6. Check the nameplate and provide the specified voltage to the coil. Voltages must be as specified at the coil rather than the power supply. This is particularly important with DC applications due to their typically high voltage drop through supply lines. All AC coils are for single phase use only. 7 Coil housings may be rotated as required to match up with supply wiring. This is done by loosening the screw at the top center of the coil housing, rotating the coil housing assembly, and re-tightening the coil housing screw. Do not splice the lead wires inside the coil housing. 8. Use the valve only on the fluid, voltage, and pressure specified on the nameplate. CAUTION: Valves should be handled carefully during installation with care taken to prevent damage to the cylinder cap tube inside the coil housing. Do Not tighten the valve in the line by applying pressure or torque to the coil housing. Use the wrench flats on either end of the valve body.

2 Note: On valves equipped with explosion proof coil housings it is necessary to use shims to Align the coil housing. A set of these shims is included with each valve with an explosion Proof housing. The part number for this shim kit is (Atko p/n 229). If the angular Alignment of the coil housing is not important the installation of the shims is not required. Instructions for Installing Shims a. Unscrew the cast iron coil housing assembly from the valves bonnet or cylinder cap. b. Place the shims over the cylinder cap tube so they rest on the cylinder cap or bonnet. c. Screw the cast iron coil housing back onto the bonnet or cylinder cap. Note: There are 4 shims with thickness of.005,.010,.015, and.020. Use any combination of these that allow the coil housing thread to bottom out such that the conduit fitting is oriented in the desired direction. d. Repeat steps b and c as required. Note: Do not use more than.050 if shims (all those provided) or the explosion proof feature of the housing will be compromised. 2

3 Maintenance Instructions CAUTION: Only qualified maintenance personnel should work on the valve. If the valve is within the warranty period, do not disassemble without approval from the factory Returned Materials Department. WARNING: Normal coil operating temperatures are high enough to cause severe burns DO NOT TOUCH HOT COILS OR COIL HOUSING WITHOUT ADEQUATE PROTECTION. Coil Replacement WARNING: Turn off electrical power to the coil 1. Disconnect the coil s electrical leads. 2. Loosen the cap screw and remove the nameplate. 3. Remove the coil hold down spring. and the upper end plate. 4. Pull the coil and can assembly off of the cylinder cap tube. 5. Separate the coil from the coil can. 6. Remove the upper and lower end plates from the coil. 7. Replace the coil and reinstall the parts in their original order. CAUTION: Do not apply voltage to the coil until it is installed in the completely assembled housing. CAUTION: Be certain that all coil housing parts are reinstalled. Failure to install end plates, coil can, or hold down spring will result in coil burn-out. Note: All coils, including AC and DC, can be used interchangeably in the 3000 series valves without changing any other parts. Operational pressures are lower with DC coils. 3

4 Cleaning or Replacement of Internal Parts WARNING: Turn off electrical power to the coil and reduce the line pressure to 0 psi before beginning disassembly. 1. Remove the cap screw and lift the entire coil housing off of the body & cylinder cap. 2. Unscrew the cylinder cap from the valve body and lift it from the body. This will expose the plunger assembly which can be held with one hand while lifting the cylinder cap with the other hand. 3. Inspect all components. 4. Clean and replace components as required CAUTION: When cleaning seat screw orifices, do not ream the out to larger diameters as prevent the valve from opening. Warning: Inspect all o-rings. Worn o-rings should be replaced and all Teflon o-rings (white in color) should be replaced as they are not reusable. Failure to do this can result in external valve leakage and be extremely dangerous. CAUTION: Attempting to take apart the plunger assembly is not recommended. The threaded parts are not re-usable and building the plunger assembly requires the use of special tools at the factory. Note: Repair kits contain the complete plunger assembly. 4

5 Troubleshooting 1. Valves has trouble opening - Is the fluid clean and free of contamination? - Is the valve installed in the proper flow direction as indicated by in and out stamps? - Is the voltage applied correct? - Is the voltage within +/- 10% of the nominal? - Is the voltage measured at the coil and with the valve energized? This is particularly important on DC applications. - Is the ambient temperature above 104 F? - Is there an audible click when the valve is energized? This indicates pilot operation. If no click is audible, check for contamination and/or bent or dented pilot tube. - Is the fluid the same as that indicated on the nameplate? - Has the pilot orifice become clogged with contaminates? 2. Valve has trouble closing - Is the fluid clean and free of contamination? - Is the valve being used for the same type of fluid for which it was built? - Is the voltage within +/-10% of nominal? - Is there a regulator or other flow restriction upstream of the valve? - Is the valve actually not closing or closing very slowly or leaking excessively? - Is there foreign matter lodged under the valve seat? - Is the fluid more viscous than 150 SUS? - Is there 100% back pressure ( downstream piping shutoff ) on the valve or does the downstream system pressure exceed the valve s inlet pressure? - Has the valve stem become worn or damaged? - Is the valve actually closing but leaking excessively? 3. Valve is leaking internally - Is the any contamination in the fluid? - How much is the leakage and at what pressure? If the leak is excessive it could be caused by a bent or dented pilot tube. If the leak is small, how does it compare with the factory leakage standard? - Is the fluid chemically compatible with the seat material? - Is the temperature of the fluid within the limits of the seat material? 5

6 4. Coil has burnt out - Is the voltage applied correct? - Is the voltage within +/- 10% of the nominal? - Is the ambient temperature above 40 C (104 F)? - Is adjacent equipment or piping radiating excessive heat to the valve or raising the air surrounding the coil above 104F? - Is the fluid temperature above that for which the valve is rated? - Is the valve s coil housing assembled correctly? Has the customer opened up the coil housing? Are the end plates installed and oriented correctly? Has the coil hold-down spring been reinstalled? - Have the coil leads been cut or damaged in handling or installation? - Is contamination or physical binding preventing the plunger from actuating? This will cause an AC coil to burn out. Monitoring the AC current draw and comparing the measured value to the holding current given in the catalog can check the presence of this condition. - Is the cycle rate excessive? - Is the valve mounted in an enclosure that prevents free circulation of the ambient air? - Was the coil failure immediate or did the burnout take hours or days? If immediate, the coil may have been defective or damaged and have shorted internally. 5. Valve leaks externally - Has the valve been disassembled? The body o-rings are frequently Teflon and may require replacement to reseal. - Is the bonnet nut or cylinder cap adequately torqued? - Is the fluid chemically compatible with the seal material? - Is the temperature of the fluid within the limits of the seat material? - 6. Valve wears out quickly - What is the cycle rate? - Is the valve chattering or internal pilot stem & seat wearing rapidly (gas application)? - Is the fluid contaminated with an abrasive material? - Is the ambient or fluid temperature excessive? - Is the fluid chemically compatible with the seal material? - Is the temperature of the fluid within the limits of the seat material - What is the customer s definition of premature wear? Contamination in fluid systems is the largest single cause of operational problems. Frequently contamination is present in new systems from sources such as pipe sealant, pipe scale, weld slag, and metallic particles from the assembly of pipe fittings. Flushing of new systems is important to reduce the occurrence of problems, however often even through flushing will not eliminate all contaminants that will break loose during the initial operation of a new system. Filters are an essential component in many systems to prevent valve problems. It is important to locate filters immediately upstream of the valves and to size the filter rating correctly. A maximum micron rating to provide adequate protection is 40 microns. Note that strainers or screens are generally not capable of providing this degree of filtration and a filter with a depth type of element is necessary. 6

7 Standard Available Coils Class B coils for 3000 Series Valves Voltage Part Number Resistance +/-10% Inrush Amps Holding Amps Volt-Amps 110 VAC 50 Hz VAC 60 Hz VAC 50 Hz VAC 50 Hz VAC 60 Hz Note: There are no DC voltage in class B coils for this valve series. Class H coils for 3000 Series Valves Voltage Part Number Resistance +/-10% Inrush Amps Holding Amps Volt-Amps 24 VAC 50 Hz VAC 60 Hz VAC 60 Hz VAC 50 Hz VAC 60 Hz VAC 60 Hz VAC 50 Hz VAC 60 Hz VAC 50 Hz VAC 60 Hz VDC VDC VDC VDC VDC VDC

8 Shown is a Model /4 Bronze Valve with a Standard NEMA 1 Coil Housing Parts that comprise standard repair kits are identified in the cross section above. Repair kit numbers are the valve model number proceeded by a K/. For instance the repair kit for a P2AA3S valve is K/ P2AA3S. All other valve parts are available for repair purposes. When ordering specify the parts desired by description the complete 13 digit catalog number. If the catalog number is unavailable, and specify: 1) the valve base model, 2) the pipe size, 3) fluid, 4) operational pressure (minimum and maximum), voltage and frequency, 5) temperature if different from ambient, and 6) any special requirements. 8

9 Dimensions, Shipping Weights, and Cv Flow Factors 3000 Series Normally Closed Bronze Catalog Number Prefix Class Class Pipe Shipping B coil H coil Size X Y Z Weight (lbs.) ¼ 7 5/16 6 ½ 2 11/ /8 7 5/16 6 ½ 2 11/ ½ 7 7/16 6 ½ ¾ 7 15/16 6 5/8 3 ¾ /16 6 5/8 3 ¾ Series Normally Open Bronze Catalog Number Prefix Class Pipe Shipping H coil Size X Y Z Weight (lbs.) 3001 ¼ 9 3/32 8 3/ / /8 9 3/32 8 3/ / ½ 9 3/16 8 3/ ¾ 9 ½ 8 ¼ 3 ¾ ½ 8 ¼ 3 ¾ 8 Cv Flow Factors Orifice Cv 1/ / /8.44 3/

10 Operation Opening When voltage is applied across the coil leads a current is produced in the coil windings which generates a magnetic field. The magnetic field attracts the plunger and causes it to move toward the center of the coil or magnetic stop. Initially the plunger slides freely on the stem until it impacts the nut or shoulder at the end of the stem. The plunger s momentum is then transferred to the stem and the stem is lifted off the seat screw or bottom nut orifice thus initiating flow through the valve. Closing When voltage is removed from the coil leads, the magnetic field collapses. Gravity pulls both the plunger and stem down until the stem point seals off the orifice stopping flow through the valve. We manufacture a complete line of rugged dependable solenoid operated valves for pressure ranging from 0 to 10,000 psi. Download a complete catalog of the Atkomatic Valve Product Line from Circle Seal Controls Atkomatic Product 2301 Wardlow Cir. Corona, CA

CIRCLE SEAL CONTROLS

CIRCLE SEAL CONTROLS ATKOMATIC SOLENOID VALVES INSTALLATION, MAINTENANCE, AND OPERATION INSTRUCTIONS 13000 SERIES Stainless, Normally Closed, Direct Lift, 3-Way Valve Installation Instructions WARNING: